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From: Gary E. Miller
Subject: ✘contrib/gpssubframe
Date: Thu, 17 Sep 2020 19:51:26 -0700

Yo All!

I just pushed a finally working contrib/gpssubframe.  Still needs
features and more polish.

If your GNSS receiver does not output subframe data, or you do not care
about Ephemerii and Almanacs, you can stop reading now.

gpssubframe reads the JSON SUBFRAME messages from gpsd, gathers them
uup, then decodes them to stdout.

The --progress option shows you as the subframe messages come in.  An
easy way to see how fast the ephermii data comes in and how slowly the
almanac data does.

The --satpos option computes the current postition, azimuth,
elevation, and range for all the satellites for which is has an
ephemeris or almanac.

Things like relativistic corrections still need to be added.  Bugs
will be found, but the core seems good.

Comments welcome.

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703  Tel:+1 541 382 8588

            Veritas liberabit vos. -- Quid est veritas?
    "If you can't measure it, you can't improve it." - Lord Kelvin

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